/*
 * Copyright [2021-present] [ahoo wang <ahoowang@qq.com> (https://github.com/Ahoo-Wang)].
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *      http://www.apache.org/licenses/LICENSE-2.0
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package me.ahoo.wow.modeling.state

import me.ahoo.wow.api.modeling.AggregateId
import me.ahoo.wow.configuration.requiredAggregateType
import me.ahoo.wow.modeling.annotation.aggregateMetadata
import me.ahoo.wow.modeling.matedata.StateAggregateMetadata
import reactor.core.publisher.Mono

/**
 * Aggregate Repository .
 *
 * @author ahoo wang
 */
interface StateAggregateRepository {
    /**
     * Load State Aggregate.
     *
     * `stateAggregate.initialized=false` means that no aggregate was found.
     * @param tailVersion [Int.MAX_VALUE] means that the latest version is loaded.
     */
    fun <S : Any> load(
        aggregateId: AggregateId,
        metadata: StateAggregateMetadata<S> = aggregateId.requiredAggregateType<Any>()
            .aggregateMetadata<Any, S>().state,
        tailVersion: Int = Int.MAX_VALUE
    ): Mono<StateAggregate<S>>

    @Deprecated("use load(aggregateId,metadata) instead.", ReplaceWith("load(aggregateId, metadata)"))
    fun <S : Any> load(metadata: StateAggregateMetadata<S>, aggregateId: AggregateId): Mono<StateAggregate<S>> {
        return load(aggregateId, metadata)
    }
}
